Why does RID signal shut down for no apparent reason?


I've been experiencing some issues with a RID, used as the only detector. At any moment, and for no apparent reason, the RID stops (yellow label), displaying in the tooltip a "balancing error". When clicking then on "Balancing", it doesn't help, but opening the purge valve for a few minutes fixes the problem (green label back). This happens more and more, at the start or during a run. 

I use HPLC grade water as the eluent, and the temperature of the RID is 40 °C. 

Has someone come accross a similar problem?


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